The CSB range of speakers consists of a series of 4 models CSB-20T and CSB-40T, which have a modern design and quality sound. They are available in black or white and are suitable for indoor use. They are certified according to the European standard EN 54-24 / 2008 for public address and fire alarm systems. They are equipped with a 3-inch or 4-inch wideband speaker and their large frequency range are also suitable for music transmission. Power is 20W or 40W. The speakers contain low-frequency transformers and allow connection to high-impedance distribution of 70V and 100V, or the speaker can be connected by bypassing the transformer Bypass, then they have an impedance of 4 or 8 Ω. The rotary switch on the back of the speaker under the cover can be used to select the taps of the transformer and thus reduce the volume power of the speaker. Mounting is performed using an articulated bracket with wall mounting with the possibility of turning in the required direction. The speaker case is made of ABS resin and is resistant to scratches and shocks.

Features list CSB-20T :

- The CSB-20T speaker model is black and is designed for indoor radio
- broadband system with high sound quality and 20W power
- mounting on an articulated bracket on the wall
- fire resistance certification for evacuation radio

Technical parameters :

- system type: wideband evacuation speaker, wall-mounted
- for environment: indoor type A
- standardized: European standard EN 54-24 / 2008
- audio converter: 3 wideband speaker with paper cone and ferrite magnet
- frequency range: 132Hz - 20kHz
- rated noise power: 20 W
- nominal impedance 100V line: 500 Ω 20W
- nominal impedance 100V line: 1.0 kΩ 10W
- rated impedance 100V line: 2.0 kΩ 5W
- nominal impedance 100V line: 4.0 kΩ 2.5 W
- nominal impedance 70V line: 245 Ω 20 W
- rated impedance 70V line: 500 Ω 10W
- rated impedance 70V line: 1.0 kΩ 5W
- rated impedance 70V line: 2.0 kΩ 2.5 W
- nominal impedance Bypass: 4 Ω
- sensitivity 500 Hz - 5 kHz pink noise: 82 dB 1 W, 1 m
- sensitivity 100 Hz - 10 kHz pink pump EN54-24: 70 dB 1 W, 4 m
- sensitivity 100 Hz - 10 kHz pink noise, according to EN54-24: 82 dB 1 W, 1 m
- max. SPL 100 Hz - 10 kHz pink noise, according to EN54-24: 83 dB 20 W, 4 m
- max. SPL 100 Hz - 10 kHz pink noise, according to EN54-24: 95 dB 20 W, 1 m
- horizontal x vertical coverage angle at 500 Hz -6 dB: 360° x 360°
- horizontal x vertical coverage angle at 1kHz -6 dB: 220° x 214°
- horizontal x vertical coverage angle at 2kHz -6 dB: 127° x 149°
- horizontal x vertical coverage angle at 4kHz -6 dB: 96° x 126°
- operating temperature: -10°C to +50°C
- connecting cable, solid conductor: 0.75 mm² 18 AWG UL2464, outer cable ø 6.6mm
- cable connection: push-in connectors steatite x 2 with speaker cable ø 6 mm and protective cover
- surface finish of the cover: ABS + PC, black color
- fire protection: wall bracket made of surface-treated steel plate, lacquered connecting bracket, screw and stainless steel safety cable
- loudspeaker grille finish: mesh perforated perforated steel plate
- weight: 1.4 kg
- product dimensions: W x D x H 115 x 107 x 175 mm

Package contents :

- wall evacuation speaker CSB-20T
- articulated wall bracket
- Czech and English instructions for use